The windows on the aft side of the right wing or warp pylon of my Mogh class cannot be changed, they always remain type 1 windows.
The ones on the left wing and the rest of the ship can be changed to all available window types.

Edit: The downswept wings from the Z-store version have unchangeable type 1 windows. If I use the straight wings from the fleet version, they have fleet type windows, but these can not be changed either. In both cases only the right side is affected.